if he's still eligible for college ball after this year (unsure of the eligibility status issues surrounding him at the moment), he'd be smart to stay in another year, prove his talent (assuming he's that good) and be a sure high pick next year.
I think of Ricky Ledo when I hear about this kid. Ledo had eligibility issues and jumped into the draft without playing any college ball at the urging of bad counseling (his family) and I think it seriously cost him in terms of draft position and thus, his career.